Spray head



May H99 E936., M. DE GRAAF SPRAY HEAD Filed March l, 1934 2Sheets-Shea*l l /Yarfl'n #De Qraa/ May 1199 N3@ M. DE GRAAF www SPRAYHEAD Filed March l, 1954 2 Sheets-Sheet 2 Mmm De (jm/f @M www CilPatented May 1.9, 1936 l UNITED STATES PATENT oFFlCE Application March1,

Claims.

The present invention relates to spray heads and more particularly tovaporizing units adapted for use in conjunction with Vegetable displaystands or for use in air humidification.

The principal objects ofthe invention are to provide a spray head of thecharacter above indicated having adjusting means for directionallycontrolling the vflow of the vaporized moisture; to provide such adevice having adjusting means for controlling the amount of water it isdesired to Vaporize; and, to provide such a device which is attractivein appearance, economical in manufacture and highly eflicient in use.

An illustrative embodiment of the invention is shown in the accompanyingdrawings, wherein:

Figure l is a perspective view of a vegetable display stand adapted foruse in retail grocery stores and provided with the spray head of theinstant invention;

Figure 2 is a transverse sectional view thereof;

Figure 3 is an enlarged View of the spray head 4 housing showing itswater Vapor emitting open- 111g i i Figure 4 is an enlarged view of thespray head assembly, portions thereof being in longitudinal section andother portions being broken away to better show its structural andfunctional characteristics;

Figure 5 is a sectional view of the spray head housing on lines 5-5 ofFigures 3 and 4;

Figure 6 is a sectional View on line 6 6 of Figure 4;

Figure 7 is a sectional View on line 'I--l of Figure 4; and

Figure 8 is an enlarged longitudinal sectional view on line 8--8 ofFigure 4.

Referring then to the drawings in which like parts of the structureshown are designated by the same numerals in the several views, adisplay stand I9 is provided with an angularly disposed screened top IIfor supporting displayed vegetables. A supply conduit I2 connected withany suitable source of water supply under pressure is preferablydisposed beneath the wire screening parallel thereto and runningsubstantially the length of the display stand and medially of its width.

A plurality of spaced vertically disposed auxiliary water supplyconduits I3 are connected with the main conduit I2 as by T-unions I4 andproject above the wire screening. The upper end of each conduit I3 ispreferably provided with a valve tting I5 for housing the valve I6 whichmay be adjustably controlled by the manually operable knurled head II.This valve fitting is pro- 1934, serial Na. 713,501 (C1. 29e-58) videdwith a vertically projecting water emitting head I8 which is here shownas externally screw threaded for receiving the internally screw threadednozzle retaining cap IS.`

Spacedly encircling each auxiliary conduit I3 5 is a drain conduit fordraining waste water therethrough and through the drain ports 2I in thevalve fitting I5 on opposite sides of the valve I5 and through the drainports 22 on opposite sides of the T-unions I4 into the base of thedisplay stand which may be provided with a drain pipe 23 here shown asat one end of the stand.

Ari annular gasket 24, preferably of rubber or of some other resilientmaterial, and whose upper surface is concave is'disposed within the capI9 whose under surface is likewise concave. A nozzle comprising anelongated member 25 is provided with a longitudinal bo-re 26 and with aspherical portion 2l adapting the spherical portion to be seated in thesocket formed by the oppostely disposed concave surf'aces of the gasketl24 and cap I9. A ball and socket joint is thus formed between thenozzle and its conduit and permits of a limited angular adjustment ofthe nozzle relative to its conduit for directionally controlling theemitted water spray. The upper end of the nozzle is externally screwthreaded and a cap 28 therefor is internally screw threaded forretaining the resilient element 29 and the spray forming element'30which is provided with a bore 3I of a Very small diameter, all as bestshown in Figure 8. The spray forming element 35 is preferably of glasswhich is non-corrosive and the water emitting bore 3| is thus maintainedopen and free of corrosion. By providing a nozzle with the elongatedmember 25 which is tapered at the inlet end thereof, sediment and otherrelatively large foreign matter carried by the water through the conduitI 3 are less likely to be passed through the longitudinal bore ,26 ofthe nozzle to clog the bore 26. In other words, such foreign matter ismore likely t0` pass beyond the intake opening or orice of thelongitudinal bore in the portion 25 of the nozzle upwardly toward theinner surface of the cap I9.

Mounted at the upper end of each drain conduit 2l) is a spray headhousing comprising the rigidly secured funnel portion 32 and the domeportion 33 which is supported by the vertically 50 disposed rods 34secured to the annular ring 40 which is mounted in vertically adjustablescrew threaded engagement with the drain conduit. By rotating theknurled head of the dome portion 33, the Width of the vapor emittingopening may 65 be varied for adjustably controlling the Vapor flowtherethrough.

A vaporizing baiiie 3B against whose under surface the spray from thenozzle impinges is suspended from the dome portion 33 as by the ball andsocket connection between the head 31 and the upper surface of the domeportion. A coiled expansion spring 38 surrounding the shank 39 andinterposed between the battle plate and the under side of the domeportion of the spray head housing is provided so that the baiiie may bemaintained in its angularly adjusted position to further directionallycontrol the flow of the water vapor emitted through the opening 35.

In operation, Water under pressure owing through the Water supplyconduit I2 is supplied to the auxiliary conduits I3 and the amountflowing therethrough may be controlled by the manually operable valveI6. As the Water is emitted through the nozzle orice 3l, a ne spray isformed which impinges upon the baffle 36 causing the spray to Vaporizeand pass through the spray emitting opening 35 of the spray headhousing. The Water vapor is thus adaptable for use either in maintainingvegetables supported on the display stand in a fresh condition or as ahumidifier for humidication purposes. Water which is not thoroughlyVaporized is permitted to low back through the drain conduit into thebase of the display stand and thence out through the drain pipe 23.

Either or both the nozzle and baffle may be manually angularly adjustedfor directionally controlling the Water vapor emitted through theopening of the spray head housing as hereinbefore described and it willthus be seen that the device is not only attractive in appearance andeconomical in manufacture but is highly e'cient in use.

While but one specific embodiment of this invention has been hereinshown and described, it

will be understood that numerous details of the construction shown maybe altered or omitted without departing from the spirit of thisinvention as dened by the following claims.

I claim:

1. In a structure of the class described, a Water supply conduit havingan angularly adjustable nozzle, a housing associated with respect to theconduit spacedly encircling the nozzle and provided with a vaporemitting opening, and a vaporizing baille secured to and dependingwithin the housing.

2. In a structure of the class described, a water supply conduit havingan angularly adjustable nozzle, a housing associated with respect to theconduit spacedly encircling the nozzle and provided with a vaporemitting opening, and an angularly adjustable vaporizing baffle securedto and depending Within the housing.

3. In a structure of the class described, a Water supply conduit havinga nozzle, a housing associated with respect to the conduit spacedlyencircling the nozzle and provided with a vapor emitting opening, and anangularly adjustable vaporizing bale secured to and depending Within thehousing.

4. In a device of the class described, a spray head, an angularlyadjustable vaporizing baille, and a housing for the spray head andvaporizing bale having a vapor emitting opening Which is adjustable asto its Width.

5. In a structure of the class described, a Watei` supply conduitprovided with a nozzle, a housing associated with respect to the conduitspacedly encircling the nozzle, a dome spacedly associated With thehousing axially adjustable relative thereto to form a vapor emittingopening adjustable as to its Width, and an angularly adjustablevaporizing bafe Within the housing.

MARTIN DE GRAAF.

